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I-84 Paving and Toothrock Tunnel

Construction Phase

Region 1: Portland metro and Hood River County (Hood River, Multnomah)

​​​​​​​​​​​​​​The Toothrock Tunnel carries I-84 east near Bonneville Dam and intersects with the Historic Columbia River Highway State Trail near Exit 41. We finished repaving the highway between Multnomah Falls and Cascade Locks in 2022 and are repairing the floor of the tunnel in 2023. 

Columbia River Gorge Construction (I-84 and the Historic Columbia River Highway)


Construction Impacts

  • Shoulder closures and nighttime single lane closures in both directions of I-84 from 7 p.m. to 7 a.m. Sunday through Thursday nights between Cascade Locks and Multnomah Falls.​
  • Speed reductions on I-84.​

Visit for real-time traffic updates.  


Construction is expected to finish in 2023.



The floor of the tunnel and pavement on I-84 between Multnomah Falls and Cascade Locks is aging and rutting. Repairs are needed to extend the life of the highway and smooth out the ride for travelers. 

To repair this infrastructure in 2022, we repaved 13 miles of I-84, resurfaced several bridges, and repaired the I-84 east Exit 41 off-ramp toward Eagle Creek where the bridge surface has deteriorated. Work on the Toothrock Tunnel will be complete in 2023.

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I-84 |

​Between Multnomah Falls and Cascade Locks

Cost and Funding

​Project cost: $23.8 million​


​The repairs will smooth out the ride for travelers, increase safety and extend the life of the highway​.  

Additional Information

Over the next several years, we have many construction projects planned on I-84 between I-205 and Hood River, and on the Historic Columbia River Highway between Troutdale and Hood River. 

View more information about upcoming work. 

For ADA (Americans with Disabilities Act) or Civil Rights Title VI accommodations, translation/interpretation services, or more information call 503-731-4128, TTY 800-735-2900 or Oregon Relay Service 7-1-1.

Podemos proveer la información en esta publicación en español. Para recibir la información en español, por favor llamé al (503) 731-4128.

Если вы хотите, чтобы информация об этом проекте была переведена на русский язык, пожалуйста, звоните по телефону 503-731-4128.

如果您想瞭解這個項目翻譯成 繁體中文 的相關資訊,請致電  503-731-4128.

이 프로젝트에 관한 한국어로 된 자료 신청방법 전화: 503-731-4128.

Nếu quý vị muốn thông tin về dự án này được dịch sang tiếng Việt, xin gọi 503-731-4128.​

Contacts & Media

Work occurs along I-84 between Multnomah Falls and east of Exit 44 in Cascade Locks.

Project Contact

Community Affairs Coordinator
Katelyn Jackson
Project Hotline
24/7 Noise: 503-294-1570
Project Accommodation Request

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Last Updated

7/8/2024 10:26 AM

Project Number


Project Documents

Related documents to this project
I84-Gorge-2023_Mailer_4.pdfView the 2023 Construction Mailer.